The four main components of promotion are direct marketing, advertising, sales and PR.
推广的四个主要组成部分分别是直接营销，广告，销售和推广。
Consulting and marketing planning agency engaged in strategic marketing, advertising, design, public relations, direct marketing and sales promotion.
咨询与营销策划机构从事战略营销，广告，设计，公共关系，直接营销和促销。
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